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Method for synthesizing blue copper ore mineral pigment

A technology of mineral pigments and azurite, applied in copper compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the basic principles of cultural relics restoration, the difficulty of long-term preservation of paintings, and the complicated steps of azurite pigments, etc. problems, to achieve the effect of improving resource utilization efficiency, solving increasing scarcity, and solving complicated process steps

Inactive Publication Date: 2020-12-29
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the traditional method of preparing azurite pigments involves complicated steps, poor batch-to-batch repeatability, and inconsistent product performance
Moreover, due to long-term mining, high-quality natural azurite has become a scarce resource, and its price is getting higher and higher. Sometimes it has to be replaced by other blue pigments, or even organic synthetic blue pigments, which makes it difficult to preserve paintings for a long time, and cannot In line with the basic principles of cultural relics restoration

Method used

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  • Method for synthesizing blue copper ore mineral pigment
  • Method for synthesizing blue copper ore mineral pigment
  • Method for synthesizing blue copper ore mineral pigment

Examples

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preparation example Construction

[0039] see figure 1 , figure 1 It is a schematic flow chart of the method for synthesizing azurite pigments in some embodiments of the present invention. The synthetic method described in the embodiment of the present invention includes: S11: preparing a reaction solution; in this step, preparing a reaction solution containing Cu 2+ brine solution, then add CO containing 3 2- and HCO 3 - At least one of the salts (that is, at least one of carbonate and bicarbonate), so as to form the first mixed solution.

[0040] According to an embodiment of the invention, the preparation of Cu 2+ The concentration of the saline solution is not particularly limited, and can be selected according to actual needs. For example, according to a specific embodiment of the present invention, Cu 2+ The concentration of the saline solution may be 0.1-1 mol / L, preferably 0.2-0.4 mol / L. According to an embodiment of the invention, the preparation of Cu 2+ The volume of the saline solution is ...

Embodiment 1

[0069] Prepare a beaker with a capacity of 500 ml, dissolve 15 g of copper nitrate trihydrate in 200 ml of deionized water, the solution is dark blue; then add 6 g of calcium carbonate powder, and stir. Keep the beaker below 14 degrees Celsius, and stir vigorously for 1 minute every 20 minutes. After about 2 hours, there will be bubbles in the solution, and after 8 hours, a blue precipitate will be formed, and the oscillation will be stopped; keep the temperature and let it stand for 24 hours hours, and stirred twice more within 24 hours. After 24 hours, ultrasonic dispersion was used to obtain a suspension, the suspension was subjected to sedimentation treatment, the precipitate was collected, washed, and dried in a vacuum oven at 70 degrees Celsius to obtain about 5.4 grams of azurite product with a yield of 78%. .

[0070] Product testing: the obtained product and the XRD phase test results of the product are as follows: figure 2 As shown, the XRD results show that most ...

Embodiment 2

[0072] Prepare a glass bottle with a sealing ring of 500 ml in capacity, dissolve 15 grams of copper nitrate trihydrate in a glass bottle filled with 200 ml of deionized water, the solution is dark blue; then add 6 grams of calcium carbonate powder, and seal the glass bottle. Keep the sealed glass bottle below 12 degrees Celsius, and vibrate vigorously for 1 minute every 20 minutes. After 2 hours, bubbles will appear in the solution, and after 6 hours, a blue precipitate will form. Stop shaking; keep the temperature and let it stand for a while. Leave for 24 hours, then shake twice within 24 hours. After 24 hours, ultrasonic dispersion was used to obtain a suspension, the suspension was subjected to sedimentation, the precipitate was collected, washed, and dried in a vacuum oven at 70 degrees Celsius to obtain about 6 grams of azurite product with a yield of 87%. .

[0073] Product testing: the obtained product and the XRD phase test results of the product are as follows: ...

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Abstract

The invention provides a method for synthesizing a blue copper ore mineral pigment. The method comprises the following steps: S1, reacting a soluble copper salt with an acid radical-containing substance in water to generate a reaction solution containing carbon dioxide gas and malachite precipitat, wherein the acid radical-containing substance is at least one of carbonate and bicarbonate; S2, standing and aging the reaction liquid in the system under the condition that the temperature is controlled to be below 15 DEG C (or adding dry ice for standing and aging in a closed system), and then performing dispersion treatment to obtain a first turbid liquid; and S3, sequentially carrying out sedimentation treatment, solid-liquid separation, water washing and drying on the first turbid liquid toobtain the blue copper ore mineral pigment. The blue copper ore mineral pigment is synthesized by utilizing a chemical method, so that the blue copper ore pigment can be produced in a standardized manner. The synthesized blue copper ore mineral pigment has the same physicochemical property as a natural blue copper ore pigment, has fewer impurities and higher purity compared with the natural bluecopper ore pigment, and lays a foundation for large-scale production and meeting of social requirements.

Description

technical field [0001] The invention relates to the technical field of pigment preparation, in particular to a method for synthesizing azurite mineral pigments, that is, a chemical synthesis method for azurite pigments. Background technique [0002] Inorganic mineral pigments have bright colors, stable chemical properties and weather resistance, which makes them the first choice for painting, colored sculpture, ancient architectural painting and other artworks and restoration of cultural relics. Among them, azurite pigment is the most commonly used mineral pigment in blue pigments used in Chinese paintings, murals, oil paintings, etc., and was called "Azurite" in ancient China. Azurite is an alkaline copper carbonate mineral, which is a supergene mineral formed by the long-term weathering of primary copper sulfide ore under special conditions. It is not only a raw material for copper smelting, but also a raw material for mineral pigments. [0003] Natural azurite pigments a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/00
CPCC01G3/00C01P2004/01C01P2004/61
Inventor 秦颍周概明
Owner UNIV OF SCI & TECH OF CHINA
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